impervious to air
1air|proof — «AIR PROOF», adjective, verb. –adj. impervious to air. –v.t. to make (something) airproof …
2impervious — SYN: impermeable. * * * im·per·vi·ous ( )im pər vē əs adj not allowing entrance or passage <medication packaged in a container impervious to air and light> im·per·vi·ous·ness n * * * im·per·vi·ous (im purґve əs) [L. impervius]… …
3air-tight — a. Hermetic, hermetical, impenetrable to air, impervious to air …
4Impervious surface — Impervious surfaces are mainly artificial structures, such as pavements, rooftops, sidewalks, roads, and parking lots covered by impenetrable materials such as asphalt, concrete, brick, and stone. Soils compacted by urban development are also… …
5Impervious — Im*per vi*ous, a. [L. impervius; pref. im not + per through + via way. See {Voyage}.] Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air. [1913 Webster] This gulf impassable, impervious. Milton …
6Man-portable air-defense systems — An SA 7 in use Man portable air defense systems (MANPADS or MPADS) are shoulder launched surface to air missiles (SAMs). They are typically guided weapons and are a threat to low flying aircraft, especially helicopters. Contents …
7airproof — /air proohf /, adj. 1. impervious to air. v.t. 2. to make impervious to air. [AIR1 + PROOF] * * * …
8airproof — I. ˈ ̷ ̷| ̷ ̷ adjective Etymology: air (III) + proof 1. : airtight 2. : made impervious to air II. transitive verb 1 …
9hermetic — Airtight; denoting a vessel closed or sealed in such a way that air can neither enter it nor issue from it. * * * her·met·ic (.)hər met ik adj being airtight or impervious to air her·met·i·cal·ly i k(ə )lē adv Her·mes Tris·me·gis·tus hər (.)mēz… …
10airproof — /ˈɛəpruf/ (say airproohf) adjective 1. impervious to air. –verb (t) 2. to make impervious to air …
